Vibration reduction structure based on double-layer plate

Abstract

The vibration reduction structure comprises a lower bottom plate, an upper bottom plate, a connecting mechanism, a vibration reduction pad and a vibration reduction pad protection layer, the lower bottom plate is provided with a groove, the vibration reduction pad and the vibration reduction pad protection layer are sequentially installed in the groove, and the upper bottom plate is installed in the groove through the connecting mechanism. The anti-vibration pad is arranged between the upper bottom plate and the lower bottom plate, the path that rail transit vibration is transmitted to the vertical piles, the upper bottom plate and the lower bottom plate through foundation soil and then transmitted to an upper main body structure can be effectively cut off, vibration control is more effective, and the influence of the rail transit vibration on the upper structure is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of vibration reduction structures, and in particular to a vibration reduction structure based on a double-layer plate. Background Art

[0002] The vibration reduction technical measures currently used in buildings mainly include building vibration isolation bearings, floating floors and foundation vibration reduction pads. Among them, building vibration isolation bearings are suitable for buildings with low structural heights. When the structural height is high, the structural overturning effect is difficult to control and the bearing capacity of the bearings is difficult to meet. The construction of floating floors is relatively complicated. When most spaces need to reduce vibration and noise, the construction volume is huge, and because a certain structural thickness is required, the building area and net height will be reduced, affecting the building space.

[0003] The invention patent with publication number CN210342302U discloses an assembled building vibration reduction mechanism, including a top plate, a bottom plate is installed at the bottom of the top plate, a vibration reduction pad is installed between the top plate and the bottom plate, and the top plate and the vibration reduction pad as well as the bottom plate and the vibration reduction pad are connected by a protective layer; the vibration reduction structure of the patent is complex and cannot effectively cut off the vibration transmission path.

[0004] Therefore, providing a vibration reduction structure that can effectively cut off the vibration transmission path is an issue that needs to be urgently addressed. Summary of the invention

[0005] The purpose of the present invention is to provide a vibration reduction structure based on a double-layer plate in order to overcome the defects of the prior art.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] According to one aspect of the present invention, a vibration-damping structure based on a double-layer plate is provided, comprising a lower base plate, an upper base plate, a connecting mechanism, a vibration-damping pad and a vibration-damping pad protective layer, wherein the lower base plate is provided with a groove, the vibration-damping pad and the vibration-damping pad protective layer are sequentially installed in the groove, and the upper base plate is installed in the groove via a connecting mechanism.

[0008] As a preferred technical solution, the vibration damping pad is installed between the vibration damping pad protection layer and the lower base plate.

[0009] As a preferred technical solution, the connection mechanism includes high-strength bolts, a rubber pad and a first sleeve. The first sleeve is installed in the upper base plate, and the high-strength bolts and the rubber pad are installed in the first sleeve.

[0010] As a preferred technical solution, the high-strength bolt is a non-fully threaded high-strength bolt, and the non-threaded portion of the high-strength bolt is installed in the rubber cushion layer.

[0011] As a preferred technical solution, the high-strength bolts penetrate the upper base plate, install the vibration-damping pads and the vibration-damping pad protective layer.

[0012] As a preferred technical solution, the connection mechanism further includes a second sleeve and an anchor bar; the second sleeve and the anchor bar are installed on the lower base plate, and the second sleeve and the anchor bar are connected by threads.

[0013] As a preferred technical solution, the high-strength bolt and the second sleeve are threadedly connected.

[0014] As a preferred technical solution, the connection structure further includes an anchor plate, which is installed on the lower base plate and is connected to the anchor bar.

[0015] As a preferred technical solution, the structure further includes vertical members and vertical piles, wherein the vertical members are installed on the upper base plate, and the vertical piles are installed on the lower base plate.

[0016] The structure also includes a concrete pad installed on the lower floor.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. A vibration-damping pad is arranged between the upper base plate and the lower base plate of the present invention, which can effectively cut off the path of the rail transit vibration being transmitted through the foundation soil to the vertical piles and the upper and lower base plates, and then to the upper main structure, making the vibration control more effective and reducing the impact of the rail transit vibration on the upper structure.

[0019] 2. The present invention also provides a vibration-damping pad protection layer to avoid damage to the vibration-damping pad during construction of the upper base plate.

[0020] 3. The upper base plate and the lower base plate of the present invention are connected by high-strength bolts, which can effectively transfer the bending moment and tension of the upper structure to the lower base plate; the pressure and shear force of the upper structure can be directly transmitted through the contact between the upper base plate, the vibration damping pad and the lower base plate of the foundation.

[0021] 4. The present invention can apply pre-tightening force through high-strength bolts to pre-compress the vibration-damping pad to reduce the deformation of the vibration-damping pad during construction, thereby reducing the adverse force on the upper structure caused by uneven settlement.

[0022] 5. The present invention also provides a concrete cushion layer, which is installed on the lower base plate to protect the lower base plate during installation.

[0023] 6. The present invention further provides vertical components and vertical piles. The vertical components and the upper base plate are integrally cast, and the lower base plate and the vertical piles are integrally cast. The positioning and installation of the structure is completed through the vertical components and the vertical piles. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1is a cross-sectional view of the structure of the present invention;

[0025] Figure 2 It is a partial enlarged view of the connection between the lower base plate and the upper base plate of the present invention;

[0026] Figure 3 It is a schematic diagram of the overall structure of the present invention.

[0027] 1. Lower base plate; 2. Upper base plate; 3. Vertical member; 4. Vertical pile; 5. High-strength bolt; 6. Rubber cushion; 7. First sleeve; 8. Second sleeve; 9. Anchor bar; 10. Anchor plate; 11. Concrete cushion; 12. Vibration-damping cushion; 13. Vibration-damping cushion protective layer. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0029] The vibration reduction technical measures currently used in buildings mainly include building vibration isolation bearings, floating floors and foundation vibration isolation pads. Among them, building vibration isolation bearings are suitable for buildings with low structural heights. When the structural height is high, the structural overturning effect is difficult to control and the bearing capacity of the bearings is difficult to meet. The construction of floating floors is relatively complicated. When there is a need for vibration reduction and noise reduction in most spaces, the construction volume is huge, and because a certain structural thickness is required, the building area and net height will be reduced, affecting the building space. The foundation vibration isolation pad has little effect on the superstructure, but when a pile foundation is used, how to meet the integrity of the pile foundation force and effectively isolate the subway vibration from being transmitted to the superstructure through the pile foundation has become a major problem in vibration control and structural design.

[0030] Based on the above problems, the present invention provides a vibration reduction structure based on a double-layer plate. A vibration reduction pad is arranged between the upper bottom plate and the lower bottom plate of the present invention, which can effectively cut off the path of the rail transit vibration being transmitted to the vertical piles and the upper and lower bottom plates through the foundation soil, and then to the upper main structure. The vibration control is more effective and reduces the impact of the rail transit vibration on the upper structure. The present invention also provides a vibration reduction pad protective layer to avoid damage to the vibration reduction pad during the construction of the upper bottom plate. The upper bottom plate and the lower bottom plate of the present invention are connected by high-strength bolts, which can effectively transmit the bending moment and tension of the upper structure to the lower bottom plate; the pressure and shear force of the upper structure can be directly transmitted through the contact between the upper bottom plate, the vibration reduction pad and the lower bottom plate of the foundation. The present invention can apply a pre-tightening force through high-strength bolts to pre-compress the vibration reduction pad to reduce the deformation of the vibration reduction pad during the construction process, thereby reducing the unfavorable force of the upper structure caused by uneven settlement. The present invention also provides a concrete cushion layer, which is installed on the lower bottom plate to protect the lower bottom plate during installation. The present invention also provides vertical components and vertical piles. The vertical components and the upper base plate are cast integrally, and the lower base plate and the vertical piles are cast integrally. The positioning and installation of the structure are completed through the vertical components and the vertical piles.

[0031] Example 1

[0032] like Figure 1-Figure 3 As shown, a vibration reduction structure based on a double-layer plate includes a lower base plate 1, an upper base plate 2, a connecting mechanism, a vibration reduction pad 12 and a vibration reduction pad protective layer 13, wherein the lower base plate 1 is provided with a groove, the vibration reduction pad 12 and the vibration reduction pad protective layer 13 are sequentially installed in the groove, and the upper base plate 2 is installed in the groove through a connecting mechanism.

[0033] The vibration-damping pad 12 is installed between the vibration-damping pad protection layer 13 and the lower base plate 1 .

[0034] In this embodiment, a groove is provided on the top of the lower base plate 1, and the shape and size of the groove match those of the upper base plate 2. The bottom and sides of the groove are fully covered with vibration-damping pads 12, and the vibration-damping pads 12 are made of polyurethane material. The thickness and material of the vibration-damping pads 12 can be designed according to vibration-damping requirements. A vibration-damping pad protective layer 13 is cast on the upper surface and side of the vibration-damping pad 12, and the vibration-damping pad protective layer 13 is cast with fine stone concrete to avoid damage to the polyurethane vibration-damping pad during construction of the foundation upper base plate.

[0035] The connection mechanism includes a high-strength bolt 5 , a rubber pad 6 and a first sleeve 7 . The first sleeve 7 is installed in the upper base plate 2 , and the high-strength bolt 5 and the rubber pad 6 are installed in the first sleeve 7 .

[0036] The high-strength bolt 5 is a non-fully threaded high-strength bolt 5 , and the portion of the high-strength bolt 5 without threads is installed in the rubber cushion layer 6 .

[0037] The high-strength bolts 5 penetrate the upper base plate 2 and install the vibration-damping pads 12 and the vibration-damping pad protection layer 13 .

[0038] The connection mechanism further includes a second sleeve 8 and an anchor bar 9; the second sleeve 8 and the anchor bar 9 are mounted on the lower base plate 1, and the second sleeve 8 and the anchor bar 9 are connected by threads.

[0039] The high-strength bolt 5 is threadedly connected to the second sleeve 8 .

[0040] The connection structure further comprises an anchor plate 10 , which is mounted on the lower base plate 1 , and is connected to the anchor bar 9 .

[0041] In this embodiment, the first sleeve 7 is a PVC sleeve, and the second sleeve 8 is a steel sleeve. The PVC sleeve is embedded in the upper base plate 2 and passes through the upper and lower surfaces of the upper base plate 2 of the foundation. The steel sleeve and anchor bar 9 are embedded in the lower base plate 1. The upper end of the anchor bar 9 is provided with a thread and is connected to the lower end of the steel sleeve by a thread. The PVC sleeve is aligned with the plane position of the steel sleeve embedded in the lower base plate 1.

[0042] The high-strength bolt 5 is a non-fully threaded high-strength bolt 5, which can be subdivided into a nut, a non-threaded area and a thread in sequence. The upper end is a nut and the lower end is a thread. The non-threaded area of ​​the high-strength bolt 5 is covered with a rubber pad 6 to reduce the vibration transmission between it and the PVC sleeve. The high-strength bolt 5 passes through the PVC sleeve, and the thread of the high-strength bolt 5 is connected to the steel sleeve pre-buried in the lower base plate 1. The high-strength bolt 5 can be poured with concrete on the upper bottom 2 and the lower base plate 1. After completion and strength is formed, a pre-tightening force is applied between the upper bottom 2 and the lower base plate 1 by applying torque on the nut. The size of the pre-tightening force can be controlled by the size of the applied torque according to the requirement of pre-deformation. A rubber pad 6 is set at the position where the nut contacts the upper base plate 2 to reduce the transmission of vibration. The number and arrangement position of the high-strength bolts 5 are set according to the requirements of pre-tightening force, the transmission requirements of the bending moment and axial force of the vertical components. The upper base plate 2 is connected to the lower base plate 1 by high-strength bolts 5. On the one hand, the vibration-damping pad 12 can be pre-compressed by applying a pre-tightening force to reduce the deformation of the vibration-damping pad 12 during construction. On the other hand, the high-strength bolts 5 can effectively provide the bending moment and tension transmission requirements that may exist in the vertical components.

[0043] An anchor plate 10 is also provided on the lower base plate 1. The anchor plate 10 and the anchor bar 9 are connected by welding or threading. Under the action of the anchor plate 10 and the anchor bar 9, the second sleeve 8 (ie, the steel sleeve) is more firmly installed on the lower base plate 1.

[0044] The structure further comprises a vertical member 3 and a vertical pile 4 , wherein the vertical member 3 is mounted on the upper base plate 2 , and the vertical pile 4 is mounted on the lower base plate 1 .

[0045] In this embodiment, the vertical member 3 and the upper base plate 2 are cast integrally, and the lower base plate 1 and the vertical piles 4 are cast integrally. The lower base plate 1 and the vertical piles 4 are still subjected to stress as a whole, and a good overall stress state and anti-floating performance can be maintained. The vertical piles 4, the lower base plate 1 and the vertical member 3 are completely isolated by the vibration-damping pads 12, cutting off the path for the rail transit vibration to be transmitted through the foundation soil to the vertical piles 4 and the upper and lower base plates, and then to be transmitted to the upper main structure.

[0046] The structure further comprises a concrete cushion layer 11 , which is mounted on the lower base plate 1 .

[0047] In this embodiment, a concrete cushion layer 11 is provided to protect the lower base plate 1 when the lower base plate 1 is installed.

[0048] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A vibration reduction structure based on a double-layer plate, characterized in that: The invention comprises a lower base plate (1), an upper base plate (2), a connecting mechanism, a vibration-damping pad (12) and a vibration-damping pad protective layer (13); the lower base plate (1) is provided with a groove; the vibration-damping pad (12) and the vibration-damping pad protective layer (13) are sequentially installed in the groove; and the upper base plate (2) is installed in the groove via the connecting mechanism.

2. A vibration reduction structure based on a double-layer plate according to claim 1, characterized in that: The vibration-damping pad (12) is installed between the vibration-damping pad protection layer (13) and the lower base plate (1).

3. The vibration reduction structure based on a double-layer plate according to claim 1 is characterized in that: The connection mechanism comprises a high-strength bolt (5), a rubber cushion layer (6) and a first sleeve (7); the first sleeve (7) is installed in the upper base plate (2), and the high-strength bolt (5) and the rubber cushion layer (6) are installed in the first sleeve (7).

4. A vibration reduction structure based on a double-layer plate according to claim 3, characterized in that: The high-strength bolt (5) is a non-fully threaded high-strength bolt (5), and the portion of the high-strength bolt (5) without threads is installed in the rubber cushion layer (6).

5. The vibration reduction structure based on a double-layer plate according to claim 3 is characterized in that: The high-strength bolts (5) penetrate the upper base plate (2) and install the vibration-damping pads (12) and the vibration-damping pad protection layer (13).

6. The vibration reduction structure based on a double-layer plate according to claim 3 is characterized in that: The connection mechanism further comprises a second sleeve (8) and an anchor bar (9); the second sleeve (8) and the anchor bar (9) are mounted on the lower base plate (1), and the second sleeve (8) and the anchor bar (9) are connected via threads.

7. A vibration reduction structure based on a double-layer plate according to claim 6, characterized in that: The high-strength bolt (5) and the second sleeve (8) are threadedly connected.

8. The vibration reduction structure based on a double-layer plate according to claim 6, characterized in that: The connection structure further comprises an anchor plate (10), wherein the anchor plate (10) is mounted on the lower base plate (1), and the anchor plate (10) is connected to the anchor bar (9).

9. The vibration reduction structure based on a double-layer plate according to claim 1, characterized in that: The structure further comprises a vertical member (3) and a vertical pile (4), wherein the vertical member (3) is mounted on the upper base plate (2) and the vertical pile (4) is mounted on the lower base plate (1).

10. The vibration reduction structure based on a double-layer plate according to claim 1, characterized in that: The structure further comprises a concrete cushion layer (11), wherein the concrete cushion layer (11) is installed on the lower base plate (1).

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